Cortical metabolism in posterolateral thalamic stroke: PET study.
Acta Neurol Scand
; 86(3): 285-90, 1992 Sep.
Article
em En
| MEDLINE
| ID: mdl-1414249
ABSTRACT
In 8 patients with small unilateral posterolateral thalamic (or, in one case, thalamocapsular) stroke (infarction or hemorrhage) selected on strict clinical (pure hemisomatosensory deficit without hemiparesis, visual field defect or neuropsychological impairment) and MRI criteria, we studied cortical energy metabolism using positron emission tomography with the 18F-fluorodeoxyglucose or the 15O-oxygen method. We found no significant ipsi- or contra-lateral metabolic depression either in the whole cortical mantle or in the sensorimotor cortex. These results support the hypothesis that location of thalamic stroke is a major determinant of the ipsilateral cortical hypometabolism characteristic of cognitively impaired patients with thalamic lesions and further emphasize the influence of the "non-specific" thalamocortical system on resting cortical metabolism. The lack of sensorimotor cortex hypometabolism in our patients suffering from hemidysesthesia and/or -hyperpathia also suggests that cortical metabolism is unaltered in thalamic pain.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Tálamo
/
Tomografia Computadorizada de Emissão
/
Córtex Cerebral
/
Transtornos Cerebrovasculares
/
Metabolismo Energético
Limite:
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Acta Neurol Scand
Ano de publicação:
1992
Tipo de documento:
Article
País de afiliação:
França